Answer: The first and last options are correct
Explanation:
The recursive formula is written in terms of the previous term of the sequence. From the information given,
the Arnold's are going to save a nickel on the first day of the month and double the amount each day of the month. Thus, the recursive formula would be
![A(n)\text{ = a}_{n\text{ - 1}}\text{ }\times\text{ 2}](https://tex.z-dn.net/?f=A%28n%29%5Ctext%7B%20%3D%20a%7D_%7Bn%5Ctext%7B%20-%201%7D%7D%5Ctext%7B%20%7D%5Ctimes%5Ctext%7B%202%7D)
where
an - 1 defines a previous term
To write the explicit formula, we would apply the formula for finding the nth term of an arithmetic sequence which is expressed as
An = ar^(n - 1)
where
a is the first term of the sequence
n is the number of terms
r is the common ratio between consecutive terms
Thus,
r = 2 because the amount is doubling each day
n = number of days
a = value of 1 nickel = $0.05
By substituting these values into the formula,
the explicit formula is
A(n) = 0.05(2)^n - 1
Answer:
z=-5
Step-by-step explanation:
divide -77.5 by 15.5, which equals -5
Answer:
In the scenario in which you have declared a numeric array named numbers, and two of its elements are numbers[1] and numbers[5] you know that numbers[1] is smaller than numbers[5] and that there are exactly three elements between those two elements. Correct answer: a and c.
numbers[i] is the element of the array called numbers
Step-by-step explanation: